KANSAS CITY, Kan. — One day after being crashed by Kyle Busch during a Nationwide race at Kansas Speedway, Brad Keselowski directly asked NASCAR about what defined an intentional wreck during Sunday's pre-race drivers meeting for the Hollywood Casino 400.

During the portion of the meeting when drivers are allowed to ask questions – which only happens about one-quarter of the time – Keselowski raised his hand from the back of the room and asked where intentional wrecks fit into NASCAR's so-called new "100% rule."

"At Chicago, we talked about racing 100%," Keselowski said. "One of the things that was distinguished as not racing 100% was intentional wrecking. I'm curious if you could define that a little further for drivers so I know exactly what that means."

A murmur went through the room as race director David Hoots tried to address Keselowski's question.

"Racing at 100% for your best finishing position is to do just that," he said.

Helton said Keselowski had asked a "fair question" but said it was ultimately up to NASCAR to make a "subjective call" about what was just racing and what actions went too far.

Neither Busch nor Keselowski were called to the NASCAR hauler after the Nationwide race and Busch said the wreck was not intentional.

"NASCAR-style racing, particularly in the three national series, is expected to be close, aggressive and hard," Helton said. "It is possible to cross that line, though – and when that happens, we're going to step in. But it's a subjective line for us to decide when that happens and what's the difference between NASCAR-style racing and something that's intentional."